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16,464 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am from Dulles: 94% depart on time. After 4 pm it’s 63%.

Best time to leave 5–6 am 93% arrive on time from DCA, 92% arrive on time from BWI
Best airport pair IAD → MIA 84% on time, 0.8% cancelled, 625 flights
Best single flight AA 1178 DCA 05:00 → MIA 07:56 · 93% on time Avoid B6 1979 DCA 20:10 → FLL 22:50 · 56% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
DCA
91
91
88
89
84
77
81
64
73
68
64
70
65
61
59
58
IAD
94
89
87
81
77
70
83
BWI
92
90
90
88
86
81
76
78
71
72
58
66
59
65
64
45
54
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United (incl. Republic) 1,555 85% 0.7% 73 min
Spirit 803 79% 4.1% 64 min
American (incl. Envoy, PSA, Republic) 6,014 78% 1.9% 80 min
Southwest 4,908 76% 1.7% 58 min
JetBlue 2,177 70% 2.5% 76 min
Delta (incl. Republic) DCA→MIA only 391 68% 1.5% 77 min
Frontier 616 64% 4.1% 90 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
AA 1178 DCA 05:00 MIA 07:56 93%
AA 401 DCA 06:02 MIA 08:50 93%
UA 1825 IAD 08:20 FLL 11:07 89%
UA 1073 IAD 08:45 MIA 11:35 87%
AA 1183 BWI 06:00 MIA 08:46 87%
· · ·
B6 1579 DCA 15:51 FLL 18:32 61%
B6 23 DCA 18:00 PBI 20:35 61%
B6 1979 DCA 20:10 FLL 22:50 56%
All 52 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
United IAD MIA 3h 01m 87% 0.6% 512 Flying now
United IAD FLL 2h 50m 84% 0.6% 709 Flying now
American BWI MIA 2h 47m 82% 1.8% 813 Flying now
Southwest BWI PBI 2h 35m 79% 1.5% 1,233 Flying now
American DCA MIA 2h 54m 78% 1.9% 3,564 Flying now
American DCA PBI 2h 42m 78% 1.7% 1,062 Flying now
Southwest BWI FLL 2h 40m 77% 1.6% 2,127 Flying now
Southwest BWI MIA 2h 45m 74% 1.9% 1,183 Flying now
JetBlue BWI FLL 2h 41m 73% 4.5% 67 Flying now
American DCA FLL 2h 44m 73% 1.9% 575 Flying now
JetBlue DCA PBI 2h 34m 70% 2.3% 743 Flying now
Frontier BWI MIA 2h 52m 70% 4.2% 265 Flying now
JetBlue DCA FLL 2h 39m 69% 2.6% 1,367 Flying now
Delta DCA MIA 2h 57m 68% 1.5% 391 Flying now
Southwest DCA FLL 2h 40m 61% 1.6% 365 Flying now
Frontier BWI FLL 2h 46m 56% 6.0% 166 Flying now
Frontier IAD FLL 2h 47m 53% 2.8% 72 Flying now
United IAD PBI 2h 44m 82% 1.2% 334 Not flying now
Spirit BWI FLL 2h 40m 80% 4.1% 775 Not flying now
Frontier IAD MIA 2h 52m 69% 1.8% 113 Not flying now
Spirit BWI MIA 2h 52m 56%few flights 3.6% 28 Not flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON